/*
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 * and open the template in the editor.
 */
package br.com.ufpb.halloc.servlet;

import br.com.ufpb.halloc.comunicacao.Facade;
import br.com.ufpb.halloc.exceptions.DisciplinaInexistenteException;
import br.com.ufpb.halloc.negocio.Disciplina;
import java.io.IOException;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.swing.JOptionPane;

/**
 *
 * @author leonardo
 */
public class ConsultaDisciplinaServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        
        Facade fachada = Facade.getInstance();
        List<Disciplina> list = new ArrayList<Disciplina>();
        
        try {
            if (!request.getParameter("cod_disciplina").equals("")) {
                list.add(fachada.pesquisaDisciplinaPorIDNoBD(request.getParameter("cod_disciplina")));
            } else {
                if (!request.getParameter("nome_disciplina").equals("")){
                    list.addAll(fachada.pesquisaDisciplinaNomeNoBD(request.getParameter("nome_disciplina")));
                } else {
                    list.addAll(fachada.getDisciplinasCadastradasNoBD());
                }
            }
        } catch (DisciplinaInexistenteException ex) {
            JOptionPane.showMessageDialog(null, ex.getMessage());
            Logger.getLogger(ConsultaDisciplinaServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
        request.setAttribute("consulta", list);
        RequestDispatcher v = request.getRequestDispatcher("ConsultaDisciplina.jsp");
        v.forward(request, response);
        
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
